:root {
  color-scheme: dark;
  --bg: #06120f;
  --panel: rgba(9, 26, 25, 0.88);
  --line: rgba(148, 184, 173, 0.24);
  --text: #ecfff8;
  --muted: #9db8ad;
  --mint: #74f2a7;
  --cyan: #67e8f9;
  --gold: #facc15;
  --red: #fb7185;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  color: var(--text);
  background:
    radial-gradient(circle at 15% 12%, rgba(116, 242, 167, 0.18), transparent 30rem),
    radial-gradient(circle at 86% 20%, rgba(103, 232, 249, 0.13), transparent 32rem),
    linear-gradient(135deg, #03100d, #071b1a 54%, #102019);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input { font: inherit; }
button { cursor: pointer; }

.market-shell { width: min(1220px, calc(100% - 28px)); margin: 0 auto; padding: 22px 0 56px; }
.market-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; }
.market-header a { border: 1px solid var(--line); border-radius: 999px; padding: 10px 14px; color: var(--mint); background: rgba(255,255,255,.045); text-decoration: none; font-weight: 900; }
.market-header div { color: var(--muted); text-align: right; }
.market-header span { display: block; color: var(--mint); font-size: .78rem; font-weight: 900; letter-spacing: .18em; text-transform: uppercase; }

.hero-panel, .control-panel, .market-grid > article {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(9, 26, 25, .94), rgba(4, 14, 17, .9));
  box-shadow: 0 24px 58px rgba(0,0,0,.28);
  backdrop-filter: blur(18px);
}
.hero-panel { position: relative; overflow: hidden; border-radius: 30px; padding: clamp(28px, 5vw, 58px); }
.hero-panel::after { position: absolute; right: -110px; top: -150px; width: 430px; aspect-ratio: 1; border-radius: 50%; content: ""; background: radial-gradient(circle, rgba(116, 242, 167, .24), transparent 67%); }
.kicker { margin: 0 0 10px; color: var(--mint); font-size: .73rem; font-weight: 950; letter-spacing: .2em; text-transform: uppercase; }
.hero-panel h1 { position: relative; margin: 0; max-width: 820px; font-size: clamp(3.4rem, 8vw, 7.4rem); letter-spacing: -.075em; line-height: .86; }
.hero-panel p:not(.kicker) { position: relative; max-width: 780px; margin: 22px 0 0; color: #c7ddd5; font-size: clamp(1rem, 1.45vw, 1.2rem); line-height: 1.62; }
.hero-actions, .equilibrium-strip, .score-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.hero-actions { position: relative; margin-top: 26px; }
.hero-actions div, .equilibrium-strip div, .score-grid div { border: 1px solid var(--line); border-radius: 18px; padding: 14px; background: rgba(255,255,255,.045); }
.hero-actions span, .equilibrium-strip span, .score-grid span { display: block; color: var(--muted); font-size: .72rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.hero-actions strong, .equilibrium-strip strong, .score-grid strong { display: block; margin-top: 6px; font-size: 1.35rem; letter-spacing: -.045em; }

.control-panel { display: grid; grid-template-columns: .8fr 1.2fr auto; gap: 18px; align-items: end; margin-top: 16px; border-radius: 24px; padding: 20px; }
.control-panel h2, .panel-heading h2, .lesson-card h2 { margin: 0 0 12px; font-size: clamp(1.8rem, 3vw, 3rem); letter-spacing: -.06em; line-height: .95; }
.control-panel p:not(.kicker), .lesson-card p { color: #bfd6ce; line-height: 1.55; }
.control-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
label { display: grid; gap: 8px; border: 1px solid var(--line); border-radius: 18px; padding: 14px; color: var(--muted); background: rgba(255,255,255,.04); font-size: .78rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
input[type="range"] { width: 100%; accent-color: var(--mint); }
label span { color: #d7eee6; text-transform: none; letter-spacing: 0; }
.button-row { display: grid; gap: 10px; }
button { border: 0; border-radius: 16px; min-height: 48px; padding: 12px 16px; color: #04130d; font-weight: 950; }
#advanceButton { background: linear-gradient(135deg, var(--mint), var(--cyan)); }
#resetButton { background: linear-gradient(135deg, #d7ede7, #9db8ad); }

.market-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; margin-top: 16px; }
.market-grid > article { border-radius: 24px; padding: 22px; }
.market-board { grid-row: span 2; }
.equilibrium-strip { margin: 16px 0; }
.market-viz { min-height: 320px; display: grid; align-content: end; gap: 12px; border: 1px solid var(--line); border-radius: 22px; padding: 18px; background: linear-gradient(to top, rgba(116,242,167,.08), transparent); }
.market-row { display: grid; grid-template-columns: 110px 1fr auto; gap: 10px; align-items: center; color: #d7eee6; }
.track { height: 20px; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: rgba(255,255,255,.045); }
.fill { height: 100%; border-radius: inherit; transition: width .35s ease; }
.fill.demand { background: linear-gradient(90deg, var(--cyan), #3b82f6); }
.fill.supply { background: linear-gradient(90deg, var(--mint), #22c55e); }
.fill.gap { background: linear-gradient(90deg, var(--gold), var(--red)); }
.outcome-text { min-height: 86px; border: 1px solid var(--line); border-radius: 18px; padding: 16px; color: #bfd6ce; background: rgba(255,255,255,.04); line-height: 1.55; }
.score-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.day-log { display: grid; gap: 10px; margin-top: 14px; }
.day-log article { border: 1px solid var(--line); border-radius: 16px; padding: 12px; color: #cfe6de; background: rgba(255,255,255,.04); }
.day-log strong { color: var(--gold); }
.lesson-card { grid-column: 2; }

@media (max-width: 980px) {
  .control-panel, .market-grid { grid-template-columns: 1fr; }
  .lesson-card { grid-column: auto; }
}
@media (max-width: 720px) {
  .market-shell { width: min(100% - 18px, 1220px); padding-top: 12px; }
  .market-header, .hero-actions, .control-grid, .equilibrium-strip, .score-grid { grid-template-columns: 1fr; }
  .market-header { align-items: flex-start; }
  .market-header div { text-align: left; }
  .hero-panel, .control-panel, .market-grid > article { border-radius: 22px; padding: 18px; }
}